Quantitative Measurement of Supersonic Flow Field around an Asymmetric Cone Model with CGBOS Method and 3D-CT Reconstruction

Abstract

In this report the novel and quantitative measurement technique of the image distortion related to the density gradient around an asymmetric cone model using colored-grid background oriented schlieren (CGBOS) method is presented. The CGBOS method enables us to obtain two-dimensional quantitative integrated distribution data of refractive index gradient around a test model in supersonic flow by calculating the distortion of the background image. We try to reconstruct the three-dimensional density information from CGBOS technique and Computed Tomography technique.